METHOD OF DETERMINING CHROMIUM (VI) Russian patent published in 2013 - IPC G01N31/22 

FIELD: chemistry.

SUBSTANCE: method of determining chromium (VI) using a polymethacrylate matrix involves preparing a chromium (VI) solution, extracting chromium (VI) using a membrane with an immobilised reagent, subsequent separation thereof from the solution, measuring the analytical signal and estimating content of chromium (VI). The membrane used is a polymethacrylate matrix with immobilised diphenylcarbazide. The analytical signal used is light absorption at 545 nm, colour coordinates or visual estimate of colour intensity of the optical membrane. Content of chromium (VI) is estimated using a calibration curve or by a visual test technique.

EFFECT: simple, faster and safer analysis.

4 ex, 1 tbl, 1 dwg